hey, i was rebuilding my carborator last night (a Carter for a 66' 170 slant 6) and everything was going perfect until i tried to take out the mix screw. The screw is seized in the base, and i cant get it out. tried PB Blaster, a little bit of heat, nothings working. Any more ideas? i only have a month to get my car running (wanna show it off at prom) and a new carb realy isnt in the budget. Thanks for any and all help
I would definately refrain from putting ANY heat on it again. Gasoline can hide alot of places and could be saturated in the old gaskets and it could get pretty dangerous. Does the screw turn at all? Is it stripped, the head or the threads? Whenever I have a carb apart for cleaning, I use Brakleen brand brake parts cleaner. You may need to soak it in some kind of cleaner overnight. Just, don't forget that that stuff is probably explosive, too. Good luck.
This could be a problem. My Grandfather showed me an old trick a long time ago that has worked for me before when PB or Kroil failed. Get a stick or just a piece of parafin (wax) like Mom used to use when canning veggies and fruit.....warm up the carb base and apply the parafin around the screw, keep heating it until the wax melts and sweats into the threads....let it cool just slightly and start trying to move the screw just slightly one way then the other, hopefully you might get it to move just a bit. Take your time and try the same procedure again....warm it up, apply the parafin and let it wick in. With some luck it will soon start to move and eventually it'll come out. PATIENCE is the key here and don't try to force the screw. Good luck.
the carb isw all dis***embled and cleaned, so theres no worry for gasw hiding anywhere, the screw doesnt move at all, but it looks like its in perfect condition. I let PB soak in to it over night, and its still not doing anything
If you don't get it broke loose soon, why not try a salvage yard replacement base. It should be really cheap. No one is standing line to buy 40 year old carbs. Gemini EFI
This carb has a conventional cast iron base, right? Not like the Holley one barrels that were a single chunk of aluminum. Clean and apart, I think you could heat the hell out of it, then soak a bit more. Remember the hole in the base that feeds gas down to the screw--that allows you to get in the blaster from the inside.
yeah, its a single piece of cast iron, but were afraid if we heat it too muchit might warp the base, and yeah, weve been blasting it through the hole too
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